Cultivation techniques of bolting and garlic dual-purpose garlic Fenglian No. 1

Fenglian No. 1 garlic has the characteristics of early maturity, cold tolerance, disease resistance, early bolting, large garlic head, high yield and high quality. It is a dual-purpose garlic variety cultivated in autumn in Huang-Huai valley. The variety has a whole growth period of 215 days, with 12 leaves and 6 leaves when overwintering, plant height 60 cm 70 cm, pseudostem 25 cm high, diameter 1.5 cm 2 cm; garlic bolting 60 cm 80 cm long, red bud, single bolting weight 23 cm 30 grams, easy bolting, crisp and tender taste good; garlic bark with purple stripes, transverse diameter 5.3-7.2 cm, dry weight 50-80 grams per head, 10 leaves per head.

The basic application of soil preparation fertilizer is 4000kg / mu for mature organic fertilizer and 100kg / mu for rotten cake fertilizer. The land is made into a border 1.8 meters wide and the ditch is 20 centimeters wide. Dig a longitudinal trench at intervals of 50 meters and a transverse waist trench at intervals of 25 meters along the border, so that the edge trench is connected with the inner three trenches.

Sowing seeds from September 20 to 30, the amount of seeds used per mu is 140-150 kg. The garlic seeds were soaked in well water for 12 hours for 16 hours, and then soaked with 50% carbendazim wettable powder (500 times solution) and 0.2% potassium dihydrogen phosphate solution for 6 hours. The sowing row spacing is 1820 cm, the plant spacing is 10 cm, and the sowing depth is 3 cm. After sowing, the soil was sealed with 33% pendimethalin EC 150ml plus 30kg water spray, and plastic film was covered after application.

In the field management, the seedlings were broken and released in time at the top soil stage, and irrigation was properly controlled after emergence. In the first ten days of December, overwintering water is watered according to weather changes. The Beginning of Spring watered the soil properly according to the seedling situation and weather conditions to keep the soil moist. In the first ten days of March, urea and potassium sulfate were applied with 10 kg and 12 kg per mu. Before quitting the mother, 20 kg of diammonium phosphate was applied per mu, and after that, according to the soil moisture, the seedlings continued to be fertilized and watered once every 5-7 days, and a fertilizer was applied between the two waters, with 10 kg of special fertilizer per mu.

To control diseases and pests and control leaf blight, spray with 75% chlorothalonil wettable powder 600% 800 times. To control purple spot, spray 64% moldy manganese zinc wettable powder with 1000 times liquid spray. To control bacterial soft rot, spray 77% copper hydroxide wettable powder 800 times. To control root maggots, spray the roots with 48% chlorpyrifos EC 200ml and water per mu, or spray the roots with 1000 times of 90% crystal trichlorfon or 1500 times of 50% phoxim EC.